body {
    overflow-y: scroll;
    margin: 0;
}

::-webkit-scrollbar {
    display: none;
}

.header-back {
    background-color: white;
    width: 100%;
    height: 50px;
}

.header {
    position: fixed;
    background-color: rgba(255, 255, 255, 0.4);
    width: 100%;
    height: 50px;
    top: 0;
    backdrop-filter: blur(20px);
}

.header-tag {
    height: 100%;
    min-width: 50px;
    padding: 0 15px;
    text-align: center;
    line-height: 50px;
    transition-duration: 0.5s;
    float: left;
}
.header-tag-right {
    height: 100%;
    min-width: 50px;
    padding: 0 15px;
    text-align: center;
    line-height: 50px;
    transition-duration: 0.5s;
    float: right;
}
.header-tag:hover, .header-tag-right:hover {
    background-color: rgba(135, 206, 250, 0.27);
}
.header-tag:active, .header-tag-right:active {
    background-color: #409EFF;
}

.main {
    height: 1080px;
}

.base {
    background-color: white;
    color: #FFFFFF;
    padding: 30px 0;
}